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E. E. HOU'. TIRE VALVE AND THE UKE. APPLICATION FILED )ULY 20, i918.

Patented Sept. 2, 1919.

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mmmlz Zt Wl TNESSES UNITED STATES PATENT oEEIoE.

EDWARDE HOLT, F CHICAGO, ILLINOIS, ASSIGNOR TO HOLT AUTO DEVICES COMPANY., OF CHICAGO, ILLINOIS, CORPORATION OF ILLINOIS.

TIRE-VALVE AND THE LIKE.

Specification of Letters Patent.

Patented Sept'. 2, 1919.

Application led July 20, 1918. Serial No. 245,866.

To all whom it may concern:

Beit known that I EDWARD E. Hour, a citizen of the United States, residing at Chinago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Tire-Valves and the like, of

whichthe following is a specification.

The present invention has todo wlth certain improvements in tire valves and theV like used particularly in connection with pneumatic tires. vWhile the features of 1nventionare especially well adapted for this `particular use, it will be understood that USES.

they are not limited to this use, but certain 'of them are equally well adapted for other mizing the possibility of the valve becoming injured or its serviceable condition impaired.

Other objects and uses of the invention will appear from adetailed description of the same which consists in thefeatures of construction and combinations of parts hereinafter described `and claimed.

- ll'with the valvein its Referring to the drawin Figure 1 Vshows a vertlcal longitudinal section through the valve when the same is in its fully opened position or condition;

Fig. 2 shows a view corresponding `to Fi fully closed position or condition;

Fig. 3 is a side elevation of the valve. plug and operating sleeve; and

Fig. 4.- is a'. vertical longitudinal section through the valve plug and the lower end yof the pin. y In the construction illustrated, the main or :body portion of the valve lis designated by the numeral 5], This is in the form of 'a stem, the lower end 6 of which is to be attachedto the tube in any suitable manner, as by the use of the well lmown form of plates or disks for clamping the material' of the tube between them. The stem 5 is generally threadedthroughout its length,

of the stem is Extending longitudinally a. bore or passage. The lower portion of `this bore orf passage designated by the nu'- meral 7 is of relatively small` size, while the upper portion designated by the numeral 8 is of larger size. .At the point of junction between these portions of the bore there is a tapered or contracted valve scat 9. The A same 1s preferably of c1rcular cross sectlon and tapers or draws together from its'up,

per to its lower portion as very clearly shown in Figs. 1 and 2. In some cases, this curvature 'may be eliminated, and use may be made of a straight taper.

The central part of the enlarged portion 8 is threaded as shown at- 10 in Figs. 1 and 2, and the upper end 11 ofthe enlarged portion 8 is of slightly increased size. The

relative .sizes of the lower central and upper portlons of the bore 8 are such that all parts thereof can be forined and finished,

including the scat 9, by the use of tools inserted through the upper end of the stem 5. This greatlyfacilitates the manufactur- `ing processes to which the valve must be subjected. The extreme upper end of the stein 5 is preferably in the form of a thin flange 12 which may be curled or beaded over, as shown in Figs. 1 land 2, for a purpose to be 'presently explained. j

`A plug 13 is operatively mounted within the. upper end of the valve stem. This plug has a longitudinal passage or bore 14, the

` lower end'of which terminates in a tapered or ,curved valve scat15, and the upper end of which preferably terminates `in an enlarged socket or recess 16. The valve seat 15 i.. shown as being formed on a curved taper somewhat similar in this respect to the seat 9, although in some cases a straight taper may be used, if desired.

The lower portion 17 of the plug 13 is threaded to correspond with the threads 16 of the enlargement 8. The central portion 18 of the plug 13 is provided with a cover working within. the upper end 11 of the passage 8, and when thethn iiange 12 is turned or beaded over as shown in Figs. 1 and 2 after the plug 13 has been set into place, said plug will be held in place and prevented from coming away from the stem 5 or being removed therefrom, except by the destruction of the parts.

The upper portion of theplug 13 may be A circular .valve member 21 is located between the valve'seats 9 and 15. The upper end of saidvalve member is provided with a tapered or conical seating face 22 adapted to seat into the seat 15, and the lower portion of said. valve member is provided with a tapered'or conical portion 23 adapted to seat into the valve seat 9. The lower end ofthe member 21 will be provided with a socket or recess 24 'so as to establish a relatively thin wall or flange 25 on the ,lower end of the member 21 in `accordance with the disclosures of Letters Patent of the United States, No. 1,271,898 issued to. me July 9, 1918. n

.A pin26 has its lower end connected to the valve member 21 and its upper end terminating within the enlarged' socket' or recess 16. The upper end ofsaid pin is pinched or flattened out as at 27 so` as to limitqthe movementof the pin downwardly through 'the bore 1.4i.` u

As shown' in Figs.. 1 and 2. a certain amount of lost motion is provided for thispin K26, the amount of this lost motion being determined 'by thev excess in the' length of the pin 26 between the valve seat 22 and the flattened portion 2,7 as compared to the distance between the valve seat 15 and the enlarged socket 16 within which the flattened portion 27 operates.

The amount ofthe aforementioned lost motion is such that when the plug 13 is'fully raised into the positionV of Fig. 1, the valve 21.will belifted-away from the seat 9 so as i to permit air tobe -forced into the tire through the bore 7. 0n the contrary when fthe plug 13 is fully lowered or forced down into its lost position as shown in Fig. 2, the entirevamount of this lost motion will be taken up andthevalve 21 will seat at both of lts ends. v l

VVhileI have herein shown and described only a single embodiment of the features of my invention, still Ido not limit myselfl toA the'said embodiment except as I may do so in the claims. l .I claim:f Y

1. As a'new'article of manufacture, a tire vvalve comprising in combination an elongated valve stem having a longitudinal passage orrbore; the inner portion-of said vpassage being of relatively small diameter, the central portion of said passage being ofV en-V larged diameter, and the outer end of said passage being ofv A'maximum diameter, the

central portion of the passage being threaded, there lbeing a curved tapering valve seat at the'point of junction between the central and smallest portions of the passage, a flange l on the eXtreme upper end of the valve stem, "a cylindrical plug member adapted for cooperation with the valve stem aforesaid and comprising a. relatively small lower end `portion threaded for engagement with the asiento threads of the central portion of the passage aforesaid, a central enlarged shoulder on t e Aplug adapted to worlrwithin the upper enlarged portion. of the passage of the valve stem, and an uppermost-enlarged end on the plug provided. with exterior threads for the accommodation of an inflating hose, there being a longitudinal borethroughout the length of the vplug,`the l,ower 'end of said bore being provided 'with a conical valve seat, and the `upper end of saidbore being i enlarged, and a valve member working be-A tween the valve stem and plug aforesaid,

Asaid valve member comprising a valve plug having its lower ende-tapered* for engagement with the valve seat first mentioned,

and its upper end taperedffor engagement with thevalve seat and plugga pin connected to said valve member andex'tending through the bore of the plug, and a stop on the socket aforesaid and serving to limit the movement of the pin and valve member with respect to the plug, substantially as de-A scribed. I

`2.. As a new article of manufacture', a tire valve comprising in combination a valve u g stem having `a longitudinal bore or passage, theJ lower end whereof is of relatively small size, the central portion whereof is of larger size, and the upper portion'of which.' isroi.s maximum size, thev central' portion ofthe bore being threaded, therelbeing a circular` tapering valve seat adjacent to the point 0f' junction between the rst' andv second menfrom the rexterior ,ofthe valve, said plu-g," having a longitudinal passage or bore, here between the two valve seats, said valveV mem-- ber comprisim a circular valve having.bothi ends tapered it? spective valve seats, a pin connected to said g v valve and extending through the bore of the plug, and means forli'mtingl the movement of the pin and valve with respect to the plug, substantially as described.

3.' As a new larticle of manufacture, a tire valve comprising, in combination, a valve istein having a longitudinal bore orpassage,

the lower end whereofis of relatively small valve seats, said valve member comprising a 180- .85 the upperend of said pinworking within` tioned' vrportions of the bore, a plug threaded onto the central portion'of the borev andghaving a protruding portion formanipulation f being a conical valve seat in the'lower nd of y said passage, and a valve member working or engagement with their ree 116 V circular valve having both ends tapered for engagement with theirv respective valve seats, and a pin connected to said valve and stem having a longitudinal .bore or passage,

there being a circular taperlng valve seat in said passage, said valve seat faclng outwardly, a plug threading into, the bore or passage at a point beyond the valve seat,` and projecting outside of the valve stem for manipulation by the user, said plugv having a longitudinal passage or bore, there being 15 an inwardly facing conical valve seat on the inn'en end-of said passage, alvalve member working between both of the valve seats, and a pin connected to said valve member and extending through thebore of the plug, 20

substantially as described.

EDWARD E. HOLT. 

